Answer:
The middle class expanded as a result of industrialization.
He has a metric asston of kids, and founded the Mongol Empire
Hippocrates was the first to separate medicine from philosophy & HE believed in the importance of diet & exercise for a healthy body
The answer is D, Kaiser Wilhelm was the last German Emperor (Kaiser) and King of Prussia, ruling the German Empire and the Kingdom of Prussia from 15 June 1888 to 9 November 1918.
C) Periodization
Periodization is a useful tool in studying history because it helps to divide the time periods into distinctive blocks of time. We can use this to reference the culture or distinctive movements in society at the time.
Many of the European periods are named after a significant ruler or a dominant family from that time period. This is why you may hear someone reference the "Victorian", "Tudor", or "Edwardian" era.
I hope this helps, God bless, and have a great day!
Brainliest is always appreciated :)